Which tissue allows contraction for movement?

Which tissue allows contraction for movement?

• A. Nerve tissues
• B. Epithelial tissues
• C. Connective tissues
• D. Muscle tissues

Answer: (D)

Muscle tissue contains specialized contractile cells that enable movement by shortening when stimulated. The contractile proteins actin and myosin slide past each other within these cells, pulling on attachments like tendons to move bones, propel contents through organs, or pump blood. Different muscle types exist: skeletal muscle moves the skeleton and is usually under voluntary control, smooth muscle contracts to move substances through internal passages and is involuntary, and cardiac muscle keeps the heart beating. Other tissues—nerve tissue transmits signals, epithelial tissue lines surfaces, and connective tissue provides support—do not shorten to produce movement. Because only muscle tissue can actively contract to generate movement, it best fits the question.

Muscle tissue contains specialized contractile cells that enable movement by shortening when stimulated. The contractile proteins actin and myosin slide past each other within these cells, pulling on attachments like tendons to move bones, propel contents through organs, or pump blood. Different muscle types exist: skeletal muscle moves the skeleton and is usually under voluntary control, smooth muscle contracts to move substances through internal passages and is involuntary, and cardiac muscle keeps the heart beating. Other tissues—nerve tissue transmits signals, epithelial tissue lines surfaces, and connective tissue provides support—do not shorten to produce movement. Because only muscle tissue can actively contract to generate movement, it best fits the question.